Jacob kkumscheid



(Model.)-

.,J. "KRUMSCHBI'Dl DOOR CHECK. i N0.`-317,14U7.7 Patented May 5, 1885.

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` UNITED STATES PATENT OFFICE. j

JACOB KRUMSOHEID, OF BOSTON, MASSOHUSETTS.

oook-CHECK.

SPECIFICATION ferming part of Letters Patent No. 317,147, dated May 5, 1885.

Application filed December 1, 1884. (Model.)

To ZZZ whom it may concern.-

Be it known that I, J Aoois KRUMscI-TEID, of Boston, in the county of Suffolk, ofthe Oommonwealth of Massachusetts, have invented a new and useful Improvement in Door-Checks; and I do hereby declare the same to be described in the following specification, and represented in the accompanying drawings, of which- Figure 1l is a front view, Fig. 2 a rear view, and Fig. 8 a horizontal section, of my said invention, the nature of which is defined in the claims hereinafter presented, Figs. l and 3 showing the door-check as applied to a doorcasing and thedoor thereof.

In the said drawings, A denotes the doorcasing, to which is secured the door-check by means of screws screwed through ears a a on the standard or frame B of the said doorcheck and into the casing.

Pivoted to one end of "the standard B, as shown at b, is an arm,O, which extends in front of and in the same horizontal plane with the said standard, and has attached to its other end a bellshaped case, E. The arm G is curved at d, and in such curved part has a 4 slot, e, in which is to travel a roller, f, that revolves on a stud, f', attached to a lever, D, fulcrumed to the standard B at g. To the shorter arm of the said lever is pivoted a rod, g', which serves as a support for one end of a spiral spring, s', that encompasses the said rod and abuts against the shoulder u on the said r`od. The other end of the spring in like manner is supported by a short rod, Z', fastened by a screw-nut to a shoulder or projection, h, against which the spring abuts, projecting from the standard B, all as represented. The longer arm of the said lever D is bent downward at t, and thence past the bell-shaped case E, and has .in its end a long slot, k, in which is to freely travel a roller, Z, that revolves on a stud, m, projecting upward from a bracket, F, which is attached by means of screws to a door, as shown at n.

To the end of the standard B, directly in rear of the bell-shaped case,is fastened a block, G, of wood or other material,in shape corresponding to that of the interior of the case, byV

means of two screw-eyes connected to each other, and one screwed through the said standard and the other into the said block, as represented at o. The b ell-shapedcase has a dat rim, as exhibited at p, between which and a 3 l j 1 flat ring corresponding in shape and size to the said rim is secured a bellows or leather diaphragm, q, by means of screws 1^ o r, 85e. The said bellows or diaphragm extends loose- ,ly across and covers the rear or open end of the case,and is attached at its middle to the block G. Y p

In the case E, as shown at s, is a short cylindrical tube in the end of which is a valve,

t, made so as toreadily admit air into the case,` 1 i.

and also allow it to slowly escape therefrom.

From the above it will be seen that when the door is opened the lever D will be pushed outward by means of the stud m and roller Z,

.traveling in the slot lc. The said lever in mov-V ing outward will cause the arm C to move in the same `direction,by means of thestudf l. and roller f, traveling in the curved" slot c, l l

going backward will, with the block G, cause y the diaphragm q to act as an air-cushion, from` which the air slowly escapes through the seat. of the valve t, thus allowing the' door to gradually close without slamming.

I claiml. The door check, substantially scribed, consisting. ofthe frame or standard B, `the slotted arm C, carrying the case E, having the valve t, the block G, connected to the said standard, the diaphragm or bellows q, attachas deed to the said case and block, the lever D, y, fulcrumed to the said standard andhaving f the stud f and roller f, the longerarm of the said lever slotted to receive the stud m, and

roller Z, projecting upwardfrom the bracket F, and its shorter arm connected to the rod g',

which with the rod i, attached to the shoulder roller f, rods g and i', shoulder h, spiral spring h, supports the spiral spring s', all being ess, bracket F, stud m, and roller Z, all being` 1o Sentially as represented. arranged and to operate essentially in manner 2. The combination, with the door-casing as set forth. 5 and dool` thereof, of the door-cheek, substanl JACOB KRUMSCHEID.

tally as described, consisting of the frame or Vitnesses: standard B, slotted arm G, ease E, valve t, R.. H. EDDY,

block G, bellows q, slotted lever D, stud f', ERNEST B. PRATT. 

